Chapter 9, Problem 9.149MP

Interpretation Introduction

Interpretation:

The $\Delta \text{H}°$ for the following reaction at 25°C with the help of given information should be determined:

${\text{4 CO}}_{\text{(g)}}+{\text{2 NO}}_{\text{2(g)}}\stackrel{}{\to }{\text{4 CO}}_{\text{2(g)}}+{\text{N}}_{\text{2(g)}}$

Concept introduction:

The Gibb’s equation of thermodynamic purposed a relation between $\text{ΔS}$, $\text{ΔH}$ and $\text{ΔG}$ with temperature. With the help of this equation the change in $\text{ΔS}$, $\text{ΔH}$ and $\text{ΔG}$ can be predicted. For any reaction, the $\text{ΔH}$ and $\text{ΔS}$ can be calculated with the help of:

$\begin{array}{l}\text{ΔrS°= }\Sigma \text{ΔrS°product - }\sum \text{ΔrS°reactant}\\ \text{ΔrH°= }\Sigma \text{ΔrH°product - }\sum \text{ΔrH°reactant}\end{array}$